jeffquitney
patreon
Boeing E-4 Nightwatch Advanced Airborne Command Post 1977 from US Air Force Aerospace Power
🕑 Added 2019-07-28 01:43:26 +0000 UTCmore at http://quickfound.net/
Originally a public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
https://en.wikipedia.org/wiki/Boeing_E-4
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
The Boeing E-4 Advanced Airborne Command Post (AACP), the current "Nightwatch" aircraft, is a strategic command and control military aircraft operated by the United States Air Force (USAF). The E-4 series are specially modified from the Boeing 747-200B for the National Emergency Airborne Command Post (NEACP) program. The E-4 serves as a survivable mobile command post for the National Command Authority, namely the President of the United States, the Secretary of Defense, and successors. The four E-4Bs are operated by the 1st Airborne Command and Control Squadron of the 595th Command and Control Group located at Offutt Air Force Base, near Omaha, Nebraska. An E-4B when in action is denoted a "National Airborne Operations Center"...
... the Air Force Electronic Systems Division awarded Boeing a contract in February 1973 for two unequipped aircraft, designated E-4A, powered by four P&W JT9D engines, to which a third aircraft was added in July 1973. The first E-4A was completed at the Boeing plant outside Seattle, Washington in 1973. E-Systems won the contract to install interim equipment in these three aircraft, and the first completed E-4A was delivered in July 1973... The A-model effectively housed the same equipment as the EC-135, but offered more space and an ability to remain aloft longer than an EC-135.
In November 1973, it was reported that the program cost was estimated to total $548 million for seven 747s, six as operational command posts and one for research and development. In December 1973, a fourth aircraft was ordered; it was fitted with more advanced equipment, resulting in the designation E-4B. On 21 December 1979, Boeing delivered the first E-4B (AF Serial Number 75-0125), which was distinguished from the earlier version by the presence of a large streamlined radome on the dorsal surface directly behind the upper deck. This contains the aircraft's SHF satellite antenna.
By January 1985 all three E-4As had been retrofitted to E-4B models. The E-4B offered a vast increase in communications capability over the previous model and was considered to be 'hardened' against the effects of nuclear electromagnetic pulse (EMP) from a nuclear blast...
The E-4B fleet has an estimated roll-out cost of approximately US$250 million each. In 2005 the Air Force awarded Boeing a five-year, US$2 billion contract for the continued upgrade of the E-4B fleet. In addition to the purchase and upgrade costs, the E-4 costs nearly $160,000 per hour for the Air Force to operate...
The E-4B is designed to survive an EMP with systems intact[9] and has state-of-the-art direct fire countermeasures. Although many older aircraft have been upgraded with glass cockpits, the E-4B still uses traditional analog flight instruments, as they are less susceptible to damage from an EMP blast.
The E-4B is capable of operating with a crew up to 112 people including flight and mission personnel, the largest crew of any aircraft in US Air Force history. With in-flight aerial refueling it is capable of remaining airborne for a considerable period, limited only by consumption of the engines' lubricants. In a test flight for endurance, the aircraft remained airborne and fully operational for 35.4 hours, however it was designed to remain airborne for a full week in the event of an emergency. It takes two fully loaded KC-135 tankers to fully refuel an E-4B. The E-4B has three operational decks: upper, middle, and lower...
